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swscale: Split h[yc]scale_fast() into their own functions.

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Originally committed as revision 29128 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
release/0.6
Ramiro Polla 16 years ago
parent 5b7c7dd329
commit 392b656764
1 changed files with 38 additions and 23 deletions
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  1. 61
      libswscale/swscale_template.c

61
libswscale/swscale_template.c
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@ -2243,6 +2243,22 @@ static inline void RENAME(hScale)(int16_t *dst, int dstW, uint8_t *src, int srcW
#endif /* HAVE_ALTIVEC */
#endif /* HAVE_MMX */
}
static inline void RENAME(hyscale_fast)(SwsContext *c, int16_t *dst,
int dstWidth, uint8_t *src, int srcW,
int xInc)
{
int i;
unsigned int xpos=0;
for (i=0;i<dstWidth;i++)
{
register unsigned int xx=xpos>>16;
register unsigned int xalpha=(xpos&0xFFFF)>>9;
dst[i]= (src[xx]<<7) + (src[xx+1] - src[xx])*xalpha;
xpos+=xInc;
}
}
// *** horizontal scale Y line to temp buffer
static inline void RENAME(hyscale)(SwsContext *c, uint16_t *dst, long dstWidth, uint8_t *src, int srcW, int xInc,
int flags, int canMMX2BeUsed, int16_t *hLumFilter,
@ -2465,15 +2481,7 @@ FUNNY_Y_CODE
} //if MMX2 can't be used
#endif
#else
int i;
unsigned int xpos=0;
for (i=0;i<dstWidth;i++)
{
register unsigned int xx=xpos>>16;
register unsigned int xalpha=(xpos&0xFFFF)>>9;
dst[i]= (src[xx]<<7) + (src[xx+1] - src[xx])*xalpha;
xpos+=xInc;
}
RENAME(hyscale_fast)(c, dst, dstWidth, src, srcW, xInc);
#endif /* ARCH_X86 */
}
@ -2491,6 +2499,26 @@ FUNNY_Y_CODE
}
}
static inline void RENAME(hcscale_fast)(SwsContext *c, int16_t *dst,
int dstWidth, uint8_t *src1,
uint8_t *src2, int srcW, int xInc)
{
int i;
unsigned int xpos=0;
for (i=0;i<dstWidth;i++)
{
register unsigned int xx=xpos>>16;
register unsigned int xalpha=(xpos&0xFFFF)>>9;
dst[i]=(src1[xx]*(xalpha^127)+src1[xx+1]*xalpha);
dst[i+VOFW]=(src2[xx]*(xalpha^127)+src2[xx+1]*xalpha);
/* slower
dst[i]= (src1[xx]<<7) + (src1[xx+1] - src1[xx])*xalpha;
dst[i+VOFW]=(src2[xx]<<7) + (src2[xx+1] - src2[xx])*xalpha;
*/
xpos+=xInc;
}
}
inline static void RENAME(hcscale)(SwsContext *c, uint16_t *dst, long dstWidth, uint8_t *src1, uint8_t *src2,
int srcW, int xInc, int flags, int canMMX2BeUsed, int16_t *hChrFilter,
int16_t *hChrFilterPos, int hChrFilterSize, void *funnyUVCode,
@ -2754,20 +2782,7 @@ FUNNY_UV_CODE
} //if MMX2 can't be used
#endif
#else
int i;
unsigned int xpos=0;
for (i=0;i<dstWidth;i++)
{
register unsigned int xx=xpos>>16;
register unsigned int xalpha=(xpos&0xFFFF)>>9;
dst[i]=(src1[xx]*(xalpha^127)+src1[xx+1]*xalpha);
dst[i+VOFW]=(src2[xx]*(xalpha^127)+src2[xx+1]*xalpha);
/* slower
dst[i]= (src1[xx]<<7) + (src1[xx+1] - src1[xx])*xalpha;
dst[i+VOFW]=(src2[xx]<<7) + (src2[xx+1] - src2[xx])*xalpha;
*/
xpos+=xInc;
}
RENAME(hcscale_fast)(c, dst, dstWidth, src1, src2, srcW, xInc);
#endif /* ARCH_X86 */
}
if(c->srcRange != c->dstRange && !(isRGB(c->dstFormat) || isBGR(c->dstFormat))){

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